CA340821A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA340821A
CA340821A CA340821A CA340821DA CA340821A CA 340821 A CA340821 A CA 340821A CA 340821 A CA340821 A CA 340821A CA 340821D A CA340821D A CA 340821DA CA 340821 A CA340821 A CA 340821A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA340821A
Other languages
French (fr)
Inventor
John Busch Aloysius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA340821A publication Critical patent/CA340821A/en
Expired legal-status Critical Current

Links

CA340821A Telephone exchange system Expired CA340821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA340821T

Publications (1)

Publication Number Publication Date
CA340821A true CA340821A (en) 1934-04-10

Family

ID=35312095

Family Applications (1)

Application Number Title Priority Date Filing Date
CA340821A Expired CA340821A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA340821A (en)

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